System and method for passing information from one device driver to another
    1.
    发明授权
    System and method for passing information from one device driver to another 失效
    将信息从一个设备驱动程序传递到另一个设备驱动程序的系统

    公开(公告)号:US07506343B2

    公开(公告)日:2009-03-17

    申请号:US10922276

    申请日:2004-08-19

    IPC分类号: G06F9/44

    CPC分类号: G06F13/28 G06F13/102

    摘要: A system and method for passing data between a first device driver and a second device driver. Data to be provided to the second device driver is identified in the first device driver. A data exchange interface within a kernel space is invoked by the first device driver. The data exchange interface initializes a physical to Direct Memory Access (DMA) address translation table for the child device based on an identifier of a direct memory access window. The data is provided to the data exchange interface. The data exchange interface, in the kernel space, writes the data to a data structure maintained and used by the second device driver.

    摘要翻译: 一种用于在第一设备驱动器和第二设备驱动器之间传递数据的系统和方法。 在第一设备驱动器中识别要提供给第二设备驱动器的数据。 内核空间中的数据交换接口由第一个设备驱动程序调用。 数据交换接口基于直接存储器访问窗口的标识符初始化子设备的物理到直接存储器访问(DMA)地址转换表。 数据提供给数据交换界面。 在内核空间中的数据交换接口将数据写入由第二设备驱动程序维护和使用的数据结构。